Inverted incandescent gas-burner.



No. 766,652. PATENTBD AUG. 2, 1904. H. AHRENDT.

INVERTED INGANDESGENT GAS BURNER.

APPLICATION FILED MAR. so. 1903.

N0 MODEL.

Wail 261556 f (/5 n 5 a rmarm Jf/MWMJ UNITED STATES Patented August 2, 1904.

PATENT OFFICE.

INVERTED INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 766,652, dated A g s 2, 1904.

Application filed March 30,1903. Serial No. 150,120Vg. N modeld To /1/0721 it may concern:

Be it known that I, HERMAN): AHRENDT, manufacturer, a subject of the King of Prussia, German Emperor, residing at 118 Alexandrinenstreet, Berlin, in the Kingdom of Prussia, German Empire, have invented a new and useful Improvement in Inverted Incandescent Gas-lhirners, of which the following is a specification.

This invention relates to an inverted gas incandescent burner in which the air-supply apertures of the nozzle are provided with tube-like elongations through which the air is compelled to pass.

The invention proper resides, first, in the fact that said tubes serve at the same time as carriers for other parts of the lamp-particularly such as the shade, globe, screen, reflector, or the like-whereby the burner is rendered cheaper and simpler, as special carrying means for such a part or such parts may now be dispensed with. In order, however, to prevent said carrying-tubes from being too strongly attacked by the ascending combustion-gases, the nozzle-pipe is furnished with a baffle-plate having bent-up portions of such a shape that the ascending combustion gases are diverted through those spaces that are located between the said tubes as well as between other parts likely to be injuriously attacked by said gases. This effect cannot be attained by the known uniformly-circular bafiie-plates, because there the combustion-gases escape uniformly at the whole circumference of the plate. In the case of a globe or shade being carried by the air-tubes that globe or shade is preferably provided below the incandescent body with a kind of bottom adapted to catch up such particles of the incandescent body as may happen to fall off. The bottom has airapertures located at such places where they do not impede the aforementioned object of the same. A burner of this improved type is shown in the accompanying drawings as an example, in which- Figure 1 is a vertical section partially in elevation, and Fig. 2 a view in perspective, of a baflie or diverting plate for the waste gases.

In the form shown in the drawings the I projection on the inside.

downwardly-directed nozzle-pipe carries a mantle ,7) at its lower end in any suitable manner, while at its upper end it carries several, preferably three, small outwardly and downwardly directed air-tubes c, which are so formed at their lower ends as to have a lug or These lugs or projections (I carry a ring (,2, on which by means of screws f a globe g or a shade, a screen, or a reflector is fixed in the ordinary manner. As the waste gases escape outward at the upper end of the bell or globe only the pure and cool air is drawn in through the pipes c and conveyed to the nozzle-tube rt in the direction indicated by the arrows. A diverting or baffle plate it may also be employed at the upper end of the nozzle-tube a beneath the pipes c, which plate is partly bent upward in such a manner thatit diverts the waste gases into the spaces between the pipes c, and this baffleplate is shown in perspective in Fig. 2.

A great advantage of the constructions hereinbefore described consists in that the air-tubes serve also as arms for supporting the ring 0 and the bell g, and thus they cannot fall outward.

In order to prevent glowing particles of the mantle from falling down and to avoid any accidental disturbance of the mantle, the bell 0r globe g in the form of construction shown and which may also be formed as a reflector is provided on its lower open side with a flat or domed cover-plate 0, of transparent material, which may be provided with airinlet apertures p and connected with the globe g in any suitable manner.

Having now described my invention, that what I wish to secure by Letters Patent of the United States is- 1. In an inverted incandescent lamp, the combination with the gas-nozzle, the mixingtube inclosing said nozzle, and the air-inlet apertures of the same, of outwardly and downwardly extending air-supply pipes communicating at their upper ends with said apertures, and being connected at their lower ends with the means for carrying the part inclosing the incandescent body, substantially and for the purpose as described.

2. In an inverted incandescent lamp, the

combination with the gas-nozzle the mixingtube inclosing said nozzle, and the air-inlet apertures of the same, of outwardly and downwardly extending air-supply pipes communicating at their upper ends with said apertures; a gallery connected with, and carried by, the lower ends of said pipes, and means inclosing the incandescent body and being carried by said gallery, substantially and for the pur pose as described.

3. In an inverted incandescent lamp, the combination with the gas-nozzle, the mixingtube inclosing said nozzle, and the air-inlet apertures of the same, of outwardly and downwardly extending air-supply pipes communicating at their upper ends with said apertures, and being connected at their lower ends with the means for carryingthe part inclosing the incandescent body; a diverting-plate surro unding said mixing-tube and having upwardlybent portions located between said pipes, and downwardly-bent portions located just behind the said pipes, substantially and for the purpose as described.

4:. In an inverted incandescent lamp, the combination With the gas-nozzle, the mixingtube inclosing said nozzle, and the air-inlet apertures of the same, of outwardly and downwardly extending air-supply pipes communicating at their upper ends with said apertures; a gallery connected with, and carried by the lower ends of said pipes; a shade carried by said gallery, and a translucid bottom provided in said shade and located below the-incandescent body; said bottom having apertures located near its outer edge, substantially and for the purpose as described.

In witness whereof I have hereunto'set my hand in presence of two witnesses.

HERMANN AHRENDT. 

